   (let [path-prefix (-> request :twixt :path-prefix)
         path (:uri request)]
     (when (match? path-prefix path)
-      (tracker/trace
+      (t/trace
         #(format "Handling asset request `%s'." path)
         (let [[requested-checksum asset-path] (parse-path path-prefix path)
               twixt (:twixt request)

  "Uses get-asset-uris to get a single URI for a single asset path."
  [twixt asset-path]
  (first (get-asset-uris twixt asset-path)))

(defn default-asset-pipeline
  "Sets up the default pipeline in either development mode or production mode."

      ;; that might compile.
      development-mode (fs/wrap-with-filesystem-cache (:cache-folder twixt-options) resolver)
      production-mode mem/wrap-with-sticky-cache
      development-mode mem/wrap-with-invalidating-cache
      true wrap-with-tracing)))

(defn wrap-with-twixt-setup
  "Wraps a handler with another handler that provides the :twixt key in the request object.
